what is the best brand for ignition coils for the CNG system? i need to replace all coils and plugs and because CNG burns so much hotter i have heard that it makes a huge difference in the coils that you install. some brnads cannot support the heat and go bad very quickly. what has been others experience?
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Re: ignition coils
Originally posted by spork40 View Posti need to replace all coils and plugs ..
As far as I know, there is nothing extra special about the COP's for an NGV versus a gasoline engine. I priced COP's for my F-250 SuperDuty at a whopping ~$70.00 per from AutoZone. I next went on ebay and found this dude from IN selling them out of his basement all 8 for $100.00. I made two trips out to the east coast and back nearly at GVWR and one trip to AZ and back towing a big honking boat on my $100.00 COP's.
Not a lick of problems.
I would however make sure that your plugs are not fouled and that they are properly gapped. Make sure you blow out the spark plug hole before extracting the plug with an air compressor!!
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Re: ignition coils
Originally posted by spork40 View Postwhile on cng i can feel a hesitation or a jumping while accelerating. i was told this would be due to my coils. i have an 02 bifuel f150 with 65K miles. would this be the cause?
Translation: If it does not give you problems running on gas, chances are it is not a mechanical/electrical issue per se. Stranger things have happened, but since you mentioned that the truck is a bi-fuel and it is an 02 .. that means your CNG delivery system is what is called a Compuvalve. It is notoriously prone to failure and replacement parts are nearly non-existence.
The good news is that if you can properly wield a wrench, you should be able to disassemble it yourself, give it a good cleaning and put it back into service solving your problem.
Here is a thread that talks about doing it:
Hope that helps ..
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Re: ignition coils
anyone have experience with the coils for a 5.4L they sell on ebay for like $70 for 8? is it worth the savings? a parts store wants like $40 each. i have heard that normal coils from ford with cng will get you about 30K, how long have these cheaper ones lasted? what spark plugs do you reccommend as well? i have had my compuvalve checked and it looks good so i am going to try coils, plugs and o rings.
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Re: ignition coils
Originally posted by spork40 View Post...anyone have experience with the coils for a 5.4L they sell on ebay for like $70 for 8? is it worth the savings? ...
It's so hard to get at on this vehicle that it didn't make sense to me to not replace all the coil packs when we replaced the plugs (I had a recommendation to just go with OEM and not do anything fancy like IRIDIUM; so no opinion on your splark plug question)
Good Luck2008 GX (extended range, trunkless version)
Polished Metal Metallic 2012 Civic Natural Gas
Fuelmaker FMQ-2-36 (since 2001)
Previously owned: 2000 GX (11 years), 1995 Bi-fuel Sonoma, 2000 Bifuel Tahoe, 2000 Bi-fuel F150
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Re: ignition coils
Originally posted by spork40 View Postdo you remember the manufacturer of the ebay coils? even on there i see them anywhere from 69 to 100 per eight.but I'm certain it wasn't Motorcraft. And now I see that they don't have any up for sale, but I purchased the set from these guys back in May of 2007... http://myworld.ebay.com/ebaymotors/f...dgeautomotive/
Last edited by CNGfamily; 09-14-2009, 04:25 PM.2008 GX (extended range, trunkless version)
Polished Metal Metallic 2012 Civic Natural Gas
Fuelmaker FMQ-2-36 (since 2001)
Previously owned: 2000 GX (11 years), 1995 Bi-fuel Sonoma, 2000 Bifuel Tahoe, 2000 Bi-fuel F150
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